Method for fabricating plasma display panel

Abstract

A method for fabricating a plasma display panel can improve contrast of a panel by using an inkjet printing method in forming a fluorescent layer in the fabrication process of the plasma display panel. Also, after charging a liquid flake of fluorescent ink with a charge of a predetermined polarity, contrast of the panel can be improved by inducing the injection direction of the liquid flake by charging an address electrode with a charge having an opposite polarity to the liquid flake so that the charged liquid flake can be printed in the center portion of the cell region.

What is claimed is:  
     
       1. A method for fabricating a plasma display panel, comprising the steps of: 
       sequentially forming a bottom plate film and an address electrode on an upper portion of a lower substrate;  
       forming a dielectric film in the upper portion of the bottom plate film and address electrode;  
       defining a cell region by forming a partition in the upper portion of the dielectric film;  
       charging fluorescent ink which is injected from a nozzle with electric charge having a predetermined polarity; and  
       applying a voltage having a polarity opposite to the charging state of the fluorescent ink to the address electrode.  
     
     
       2. The method of  claim 1 , wherein the fluorescent ink is charged with positive electric charge, and a negative voltage is applied to the address electrode. 
     
     
       3. A method for fabricating a plasma display panel, comprising the steps of: 
       defining a cell region by forming a partition in the upper portion of the dielectric film after sequentially forming a bottom plate film and address electrode in the upper portion of the lower substrate and forming a dielectric film in the upper portion of the bottom plate film and address electrode, and then preparing a lower plate by forming a fluorescent layer using an inkjet printing method in the cell region;  
       forming a sustain electrode and a bus electrode, forming a dielectric film in the lower portion of the sustain electrode, bus electrode and an upper substrate, and preparing an upper plate by forming a protecting film for protecting the dielectric film in the lower portion of the dielectric film; and  
       injecting discharging gas into the cell region through an injection port after combining the upper and lower plates to form the gas injection port,  
       wherein the step preparing the lower plate by forming the fluorescent layer includes the steps of;  
       charging fluorescent ink injected from a nozzle with an electric charge having a predetermined polarity; and  
       applying a voltage of the polarity which is opposite to the charging state of the fluorescent ink to the address electrode.  
     
     
       4. The method of  claim 3 , wherein the fluorescent ink is charged with a positive charge, and a negative voltage is applied to the address electrode.